Analysis of Traditional and Alternative Methods for Solving Voltage Problems in Low Voltage Grids: An Estonian Case Study
Smart Cities can benefit from existing municipal low voltage (LV) distribution grids by supporting public services with permanent power supply and providing grid connection points to distributed generators (DG). The increased integration of DGs and inverter based non-linear loads increases voltage q...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-02-01
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| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/15/3/1104 |
| _version_ | 1797487983778070528 |
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| author | Argo Rosin Imre Drovtar Heigo Mõlder Kaija Haabel Victor Astapov Toomas Vinnal Tarmo Korõtko |
| author_facet | Argo Rosin Imre Drovtar Heigo Mõlder Kaija Haabel Victor Astapov Toomas Vinnal Tarmo Korõtko |
| author_sort | Argo Rosin |
| collection | DOAJ |
| description | Smart Cities can benefit from existing municipal low voltage (LV) distribution grids by supporting public services with permanent power supply and providing grid connection points to distributed generators (DG). The increased integration of DGs and inverter based non-linear loads increases voltage quality issues, thus the cost-efficient assurance of voltage quality in LV grids with long radial lines is of increasing importance for the operators of municipal electricity distribution systems. Conventional methods for mitigating voltage quality issues (e.g., power line renovation) might not be optimal solutions either technologically or economically. Existing studies do not address all relevant issues related to the assurance of required voltage quality in such LV grids. This paper provides an overview of the applicability and rationality of traditional as well as alternative methods to solve voltage problems in LV grids. The authors use DIgSILENT PowerFactory software to simulate the performance of voltage stabilisers under different conditions. The authors propose a robust method for the classification of LV feeders and provide recommendations on how to resolve voltage quality problems, with the help of different power quality improvement devices, where the traditional methods of upgrading to medium voltage and grid reinforcement are economically infeasible. Based on our results, recommendations for mitigating voltage quality problems in LV distribution grids with radial lines of different lengths are given. |
| first_indexed | 2024-03-09T23:55:36Z |
| format | Article |
| id | doaj.art-8aeb03ba850243e893e1180f7085239d |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-09T23:55:36Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-8aeb03ba850243e893e1180f7085239d2023-11-23T16:25:13ZengMDPI AGEnergies1996-10732022-02-01153110410.3390/en15031104Analysis of Traditional and Alternative Methods for Solving Voltage Problems in Low Voltage Grids: An Estonian Case StudyArgo Rosin0Imre Drovtar1Heigo Mõlder2Kaija Haabel3Victor Astapov4Toomas Vinnal5Tarmo Korõtko6FinEst Centre for Smart Cities, Tallinn University of Technology, Ehitajate Road 5, 19086 Tallinn, EstoniaFinEst Centre for Smart Cities, Tallinn University of Technology, Ehitajate Road 5, 19086 Tallinn, EstoniaFinEst Centre for Smart Cities, Tallinn University of Technology, Ehitajate Road 5, 19086 Tallinn, EstoniaDepartment of Electrical Power Engineering and Mechatronics, Tallinn University of Technology, Ehitajate Road 5, 19086 Tallinn, EstoniaDepartment of Electrical Power Engineering and Mechatronics, Tallinn University of Technology, Ehitajate Road 5, 19086 Tallinn, EstoniaDepartment of Electrical Power Engineering and Mechatronics, Tallinn University of Technology, Ehitajate Road 5, 19086 Tallinn, EstoniaFinEst Centre for Smart Cities, Tallinn University of Technology, Ehitajate Road 5, 19086 Tallinn, EstoniaSmart Cities can benefit from existing municipal low voltage (LV) distribution grids by supporting public services with permanent power supply and providing grid connection points to distributed generators (DG). The increased integration of DGs and inverter based non-linear loads increases voltage quality issues, thus the cost-efficient assurance of voltage quality in LV grids with long radial lines is of increasing importance for the operators of municipal electricity distribution systems. Conventional methods for mitigating voltage quality issues (e.g., power line renovation) might not be optimal solutions either technologically or economically. Existing studies do not address all relevant issues related to the assurance of required voltage quality in such LV grids. This paper provides an overview of the applicability and rationality of traditional as well as alternative methods to solve voltage problems in LV grids. The authors use DIgSILENT PowerFactory software to simulate the performance of voltage stabilisers under different conditions. The authors propose a robust method for the classification of LV feeders and provide recommendations on how to resolve voltage quality problems, with the help of different power quality improvement devices, where the traditional methods of upgrading to medium voltage and grid reinforcement are economically infeasible. Based on our results, recommendations for mitigating voltage quality problems in LV distribution grids with radial lines of different lengths are given.https://www.mdpi.com/1996-1073/15/3/1104voltage qualitylow voltage distribution gridpower system modellingvoltage measurementvoltage quality improvement |
| spellingShingle | Argo Rosin Imre Drovtar Heigo Mõlder Kaija Haabel Victor Astapov Toomas Vinnal Tarmo Korõtko Analysis of Traditional and Alternative Methods for Solving Voltage Problems in Low Voltage Grids: An Estonian Case Study Energies voltage quality low voltage distribution grid power system modelling voltage measurement voltage quality improvement |
| title | Analysis of Traditional and Alternative Methods for Solving Voltage Problems in Low Voltage Grids: An Estonian Case Study |
| title_full | Analysis of Traditional and Alternative Methods for Solving Voltage Problems in Low Voltage Grids: An Estonian Case Study |
| title_fullStr | Analysis of Traditional and Alternative Methods for Solving Voltage Problems in Low Voltage Grids: An Estonian Case Study |
| title_full_unstemmed | Analysis of Traditional and Alternative Methods for Solving Voltage Problems in Low Voltage Grids: An Estonian Case Study |
| title_short | Analysis of Traditional and Alternative Methods for Solving Voltage Problems in Low Voltage Grids: An Estonian Case Study |
| title_sort | analysis of traditional and alternative methods for solving voltage problems in low voltage grids an estonian case study |
| topic | voltage quality low voltage distribution grid power system modelling voltage measurement voltage quality improvement |
| url | https://www.mdpi.com/1996-1073/15/3/1104 |
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